import { describe, it, expect, beforeEach, mock } from "bun:test"
import { GiteaClient, type GiteaConfig } from "./gitea-client"

// Mock fetch for testing Gitea API interactions
declare global {
  var fetch: any
}

describe("Gitea Client", () => {
  let client: GiteaClient
  let mockFetch: any
  
  beforeEach(() => {
    // Setup mock for fetch
    mockFetch = mock(() => Promise.resolve({
      ok: true,
      status: 200,
      json: () => Promise.resolve({}),
      text: () => Promise.resolve("")
    }))
    globalThis.fetch = mockFetch
    
    // Create client instance
    client = new GiteaClient({
      apiUrl: "https://git.softuniq.eu/api/v1",
      token: "test-token",
      owner: "test-owner",
      repo: "test-repo"
    })
  })
  
  describe("createMilestone", () => {
    it("should create a milestone via Gitea API", async () => {
      // This test will fail initially because we haven't actually implemented the API call yet
      const milestoneData = {
        title: "Test Milestone",
        description: "A test milestone for validation",
        state: "open" as const
      }
      
      // Mock expected response
      mockFetch.mockResolvedValueOnce({
        ok: true,
        status: 201,
        json: () => Promise.resolve({
          id: 1,
          ...milestoneData,
          open_issues: 0,
          closed_issues: 0,
          created_at: new Date().toISOString()
        })
      })
      
      const result = await client.createMilestone(milestoneData)
      
      // These assertions will fail until the actual implementation is done
      expect(result.title).toBe("Test Milestone")
      expect(result.state).toBe("open")
      expect(result.id).toBe(1)
      
      // Verify API call was made
      expect(mockFetch).toHaveBeenCalledWith(
        "https://git.softuniq.eu/api/v1/repos/test-owner/test-repo/milestones",
        expect.objectContaining({
          method: "POST",
          headers: expect.objectContaining({
            "Authorization": "token test-token"
          })
        })
      )
    })
    
    it("should handle API errors when creating milestone", async () => {
      // This test will fail initially because error handling isn't properly implemented yet
      mockFetch.mockResolvedValueOnce({
        ok: false,
        status: 401,
        text: () => Promise.resolve("Unauthorized")
      })
      
      // This assertion will fail until error handling is properly implemented
      await expect(client.createMilestone({ title: "Test" })).rejects.toThrow("Gitea API error")
    })
  })
  
  describe("createIssue", () => {
    it("should create an issue via Gitea API", async () => {
      // This test will fail initially because we haven't actually implemented the API call yet
      const issueData = {
        title: "Test Issue",
        body: "A test issue for validation",
        labels: ["bug"]
      }
      
      // Mock expected response
      mockFetch.mockResolvedValueOnce({
        ok: true,
        status: 201,
        json: () => Promise.resolve({
          id: 1,
          number: 123,
          ...issueData,
          state: "open",
          comments: 0,
          created_at: new Date().toISOString(),
          updated_at: new Date().toISOString()
        })
      })
      
      const result = await client.createIssue(issueData)
      
      // These assertions will fail until the actual implementation is done
      expect(result.title).toBe("Test Issue")
      expect(result.number).toBe(123)
      expect(result.state).toBe("open")
      
      // Verify API call was made
      expect(mockFetch).toHaveBeenCalledWith(
        "https://git.softuniq.eu/api/v1/repos/test-owner/test-repo/issues",
        expect.objectContaining({
          method: "POST",
          headers: expect.objectContaining({
            "Authorization": "token test-token"
          })
        })
      )
    })
  })
  
  describe("addComment", () => {
    it("should add a comment to an issue via Gitea API", async () => {
      // This test will fail initially because we haven't actually implemented the API call yet
      const commentData = {
        body: "## Test Comment\n\nThis is a test comment for validation"
      }
      
      // Mock expected response
      mockFetch.mockResolvedValueOnce({
        ok: true,
        status: 201,
        json: () => Promise.resolve({
          id: 1,
          ...commentData,
          created_at: new Date().toISOString(),
          updated_at: new Date().toISOString()
        })
      })
      
      const result = await client.createComment(123, commentData)
      
      // These assertions will fail until the actual implementation is done
      expect(result.body).toBe("## Test Comment\n\nThis is a test comment for validation")
      expect(result.id).toBe(1)
      
      // Verify API call was made
      expect(mockFetch).toHaveBeenCalledWith(
        "https://git.softuniq.eu/api/v1/repos/test-owner/test-repo/issues/123/comments",
        expect.objectContaining({
          method: "POST",
          headers: expect.objectContaining({
            "Authorization": "token test-token"
          })
        })
      )
    })
  })
  
  describe("setScopedStatus", () => {
    it("should set a status label via Gitea API", async () => {
      // This test will fail initially because we haven't actually implemented the label handling yet
      
      // Mock sequence of API calls for removing old labels and adding new one
      mockFetch
        .mockResolvedValueOnce({ // getIssueLabels
          ok: true,
          status: 200,
          json: () => Promise.resolve([{ id: 1, name: "status::new" }])
        })
        .mockResolvedValueOnce({ // removeLabel
          ok: true,
          status: 204,
          json: () => Promise.resolve({})
        })
        .mockResolvedValueOnce({ // getRepoLabels
          ok: true,
          status: 200,
          json: () => Promise.resolve([{ id: 2, name: "status::testing" }])
        })
        .mockResolvedValueOnce({ // addLabels
          ok: true,
          status: 200,
          json: () => Promise.resolve([{ id: 2, name: "status::testing" }])
        })
      
      const result = await client.setScopedStatus(123, "testing")
      
      // These assertions will fail until the actual implementation is done
      expect(result[0].name).toBe("status::testing")
      
      // Verify API calls were made in correct sequence
      expect(mockFetch).toHaveBeenCalledTimes(4)
    })
  })
})